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CCVT/CVT Testing

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    CCVT/CVT Testing

    Can any of you tell me what test set or method you are using for testing turns ratio on CCVTs? Are you guys applying a high voltage to the high voltage terminal, and measuring the secondary, or are you using a test set? My understanding is a standard TTR test set will record too high of an error due to the voltage decay in the capacitor stack. Vanguard's CTV-765 seems like a simple and fast test set. Any feedback is appreciated. Thanks!
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  2. #2
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    Most simple method I think is using a power factor test set as a power supply to the HV terminal and measure the secondary voltage.
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  4. #3
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    Quote Originally Posted by Sanjayo View Post
    Most simple method I think is using a power factor test set as a power supply to the HV terminal and measure the secondary voltage.
    totally agree with Sanjayo, just did some a few months back, 80kv-120v I believe. we put 10kv on the high side with our omicron cpc100/td1 and measured 15v on the low side
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  6. #4
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    Could you use an AC hipot if you don't have a power factor set?
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  8. #5
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    Quote Originally Posted by randywright View Post
    Could you use an AC hipot if you don't have a power factor set?
    Never tried that... not sure honestly. I don't see why not.
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  10. #6
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    Hipots usually trip out on very low levels of current.

    Quote Originally Posted by lester mcmanaway View Post
    Never tried that... not sure honestly. I don't see why not.
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  12. #7
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    Quote Originally Posted by randywright View Post
    Hipots usually trip out on very low levels of current.
    Very true. Yep, not likely you would be able to use a hipot. Good call. Depending on the ratio, I've used just a small power source.
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